the year on the topic of “25 years of the CPT: achievements and areas for improvement” (see the section on organisational matters below). Contacts were also maintained with the European Court of Human Rights (see in particular paragraph 21 above), the Commissioner for Human Rights and his office, and the Special Representative of the Secretary General on migration and refugees, as well as many other bodies and sectors of the Council of Europe. In addition, the CPT closely followed intergovernmental standard-setting carried out by the Committee of experts on administrative detention of migrants (CJ-DAM) concerning draft European rules on the administrative detention of migrants and by the Committee on Bioethics (DH-BIO) concerning the draft Additional Protocol to the “Oviedo Convention” on the protection of human rights and dignity of persons with mental disorders. Other Council of Europe activities in which the CPT participated were: an international expert conference entitled “Immigration Detention of Children: Coming to a Close?”, held under the auspices of the Czech Chairmanship of the Committee of Ministers in Prague (Czech Republic) on 25-26 September, a multilateral meeting on the organisation and management of prison health care on 12-13 October in Strasbourg and the 22nd Conference of Directors of Prison and Probation Services in Lillestrøm (Norway) on 20-21 June. The CPT also attended several meetings involving European national preventive mechanisms, in particular on 4-5 April (Strasbourg), 31 May and 1 June (Strasbourg) and on 14-15 November (Prague). 24. Regarding contacts with bodies outside the Council of Europe, the CPT maintained its close relations with relevant bodies and agencies of the United Nations throughout 2017. In particular, fruitful contacts were pursued with the UNHCR in the context of the preparation of CPT visits. Furthermore, CPT delegations met UNHCR representatives during their visits to Bulgaria, Cyprus, Hungary, Italy, Poland, Slovenia and Ukraine. Over the year, the CPT maintained close contacts with the United Nations Subcommittee on Prevention of Torture and other Cruel, Inhuman or Degrading Treatment or Punishment (SPT). It also participated in the United Nations Office on Drugs and Crime (UNODC) Expert Group Meeting on the review of guidance material on the United Nations Standard Minimum Rules for the Treatment of Prisoners (the Nelson Mandela Rules) in Vienna on 9-10 February; a workshop on overcrowding and torture organised by the Committee Against Torture (CAT) in Geneva on 7-8 August; and a seminar organised by the Office of the United Nations High Commissioner for Human Rights (OHCHR) in Geneva. The CPT also participated in events organised by European Union institutions and agencies such as the Fundamental Rights Agency refresher course on fundamental rights for Schengen evaluation trainers in the field of return and readmission and border management on 15 September in Vienna and an exchange of views with a European Parliament sub-committee on the occasion of the International Day in Support of Victims of Torture on 22 June in Brussels. In addition, representatives of the CPT met the Executive Director of Frontex in Warsaw on 31 March and renewed contacts with other European Union institutions and agencies on 20 April in Brussels General Report of the CPT, 2017 ► Page 12